Medieval Warm Period -- fact vs fiction

This video looks at the scientific research to answer three basic questions: 1) Was the Medieval Warm Period global? 2) Was it warmer than today? 3) And what does this all mean anyway? I examine the internet feud over the hockey stick and the various myths and misinterpretations about the Medieval Warm Period that seem to be rife on the Internet. My sources for the myths are blogs and videos; my sources for the facts are scientific papers.



CORRECTION AT 5:51: The graph without recent temperatures is not the work of a blogger after all, it comes from the researchers themselves. This does not change the fact that this graph was used by the Daily Mail to incorrectly infer that the MWP was warmer than today, while the graph the researchers used to show recent temperatures was not shown.

SOURCES

0:45 Christopher Monckton interview with Michael Coren

01:23 http://www.co2science.org/education/reports/prudentpath/ch1.php
and
http://scienceandpublicpolicy.org/images/stories/papers/blogwatch/nova_hidden_data.pdf


02:18 Ibid

02:42 "Global-scale temperature patterns and climate forcing over the past six centuries" -- ----- Mann Bradley and Hughes, Nature 1998

02:50 "Northern Hemisphere Temperatures During the Past
Millennium: Inferences, Uncertainties, and Limitations" Mann Bradley and Hughes, American Geophysical Union. 1999

03:03 "Hockey sticks, principal components, and spurious significance" -- McIntyre and McKitrick, Geophysical Research Letters 2005

03:18 "Surface Temperature Reconstructions for the Last 2,000 years" National Academy of Sciences

03:41 "Ad Hoc Committee Report on the 'Hockey Stick' Global [sic] Climate Reconstruction" -- Edward Wegman, published in Computational Statistics and Data Analysis 2008

"Climate study gets pulled after charges of plagiarism" http://www.usatoday.com/weather/clima...

04:21 "Proxy-based reconstructions of hemispheric and global surface temperature variations
over the past two millennia" Mann et al, PNAS 2008

05:10 "Orbital Forcing of Tree Ring Data" Esper et al, Nature Climate Change 2012

05:20 Daily Mail story: http://usatoday30.usatoday.com/weather/climate/globalwarming/2011-05-15-climate-study-plagiarism-Wegman_n.htm

06:23 "A NEW RECONSTRUCTION OF TEMPERATURE VARIABILITY IN THE EXTRA-TROPICAL NORTHERN HEMISPHERE DURING THE LAST TWO MILLENNIA" Lungqvist, Swedish Society for Anthropology and Geography 2010

07:00 "Catastrophe Denied" by Warren Myer

07:37 "Highly variable Northern Hemisphere temperatures reconstructed from
low- and high-resolution proxy data" -- Moberg, Nature 2005

08:21 "A 2000-YEAR GLOBAL TEMPERATURE RECONSTRUCTION
BASED ON NON-TREERING PROXIES" -- Loehle 2007

08:28 Joannenova.com

08:40 "Correction to: A 2000-YEAR GLOBAL TEMPERATURE
RECONSTRUCTION BASED ON NON-TREE RING PROXIES" Loehle 2008

08:50 Ibid

09:01 http://www.skepticalscience.com/new-remperature-reconstruction-vindicates.html

09:15 "The Great Global Warming Swindle" -- by Martin Durkin Channel 4

09:26 "Global Warming Sunspots Explained" by David Archibald

09:31 "Catastrophe Denied" by Warren Myer

09:35 "The Truth About Global Warming" by David Icke

09:48 IPCC report, Chapter 7, 1990
10:10 McIntyre

10:19 "High-resolution palaeoclimatology of the last millennium: a review of current
status and future prospects" Jones et al, The Holocene, 2009

11:40 Global Warming (or is it Global Cooling)' http://rogerfromnewzealand.wordpress.com/porky-no-3-ipcc-attempts-to-change-history/

14:59 Joannenova.com

17:24 "Unstoppable Solar Cycles" https://www.youtube.com/watch?v=Cl4Pz1mwBao


19:10 "Extra-tropical Northern Hemisphere land temperature variability over the past 1000 years" Cook et al., Quaternary Science Reviews 2004

19:24 "Long-Term Aridity Changes in the Western United States" -- Cook et al, Science 2004
See also: "Drought Reconstructions for the Continental United States" -- Cook et al, Journal of Climate 2004

19:27 "The 'Mediaeval Warm Period' drought recorded in Lake Huguangyan, tropical
South China" -- Chu et al, The Holocene 2002

19:29 "Amazonia suffered immense drought between 700-800 AD and 1000-1100 AD" (Fire, Climate Change and Biodiversity in Amazonia: a Late Holocene Perspective. M. Bush. Phil. Trans. Royal Society. 2008. Archaeological Evidence for the Impact of Mega-Nino Events on Amazonia during the past two Millennia. B. Meggers. Smithsonian. 1994.)

19:33 http://www.newscientist.com/movie/usmap

19:45 "Drought Under Global Warming: a review" -- Aiguo Dai, Wiley Interdisciplinary Reviews: Climate Change 2011
https://www2.ucar.edu/atmosnews/news/2904/climate-change-drought-may-threaten-much-globe-within-decades

Climate Changes, But Facts Don't: Debunking Monckton

On the 19th of July in 2011 the National Press Club of Australia held a debate on climate change. In this video I will be analysing the claims Christopher Monckton made during the debate and if they are correct or not.



The reason I'm doing this is that Christopher Monckton challenges his critics to check his sources, or like he put it in this debate "to do your homework". I'm going to follow him up on this to see if the scientific literature, and other available sources, corroborate what he's saying.

A full transcript of this video is available on the website RealSceptic.com. The transcript has been split up in the different claims made by Christopher Monckton and are listed in chronological order. On the page for each individual claim you will also find a full listing of all the sources I used for that particular section of the video.

Hope you will find this video interesting and informative.

Christopher Monckton respond video

Christopher Monckton has responded to my catelogue of his errors, on the website wattsupwiththat.com
It includes an extraordinary reversal of position on most of them, including an outright denial of what he said (needless to say, I have video tape of him saying it.)


Monckton responds (part 1/2)


Monckton responds (part 2/2)


climate change (global warming)

See also
Lord Christopher Monckton Bunkum - Global cooling and melting ice

Christopher Monckton Bunkum Part 2 - Sensitivity

Watch also Lord Christopher Monckton Bunkum - Global cooling and melting ice



SOURCES:

2" Interview on Australian TV program 'Sunrise' 2009

1'02" McNeil publishing history: http://web.maths.unsw.edu.au/~bmcneil/publications.html

4'19" Royer

4'29" "The equilibrium sensitivity of the Earth's temperature to radiation changes"
R. Knutti and G. Heger
Nature Geoscience 2008

5'59" Rebuttals to Lindzen
"Relationships between tropical sea surface temperature and top-of-atmosphere radiation"
K. Trenberth, J. Fasullo, C. O'Dell T. Wong
GEOPHYSICAL RESEARCH LETTERS, 2010

"Constraining climate sensitivity with linear fits to outgoing radiation"
Daniel M. Murphy, GEOPHYSICAL RESEARCH LETTERS 2010

"Revisiting the determination of climate sensitivity from relationships between surface temperature and radiative fluxes"
E. Chung, B. Soden, B. Sohn
GEOPHYSICAL RESEARCH LETTERS, 2010

"The Impact of Global Warming on Marine Boundary Layer Clouds over the Eastern Pacific—A Regional Model Study"
A. Lauer et al
Journal of Climate, 2010

6'15" Monckton-Lambert debate: http://www.youtube.com/watch?v=nB5N8EtNCzA

6'34" "Climate Sensitivity Reconsidered," Forum on Physics and Society, July 2008

6'53" Calculation rebuuttals at:
http://duoquartuncia.blogspot.com/2008/07/aps-and-global-warming-what-were-they.html
http://www.realclimate.org/index.php/archives/2008/07/once-more-unto-the-bray/
http://scienceblogs.com/deltoid/2008/07/moncktons_triple_counting.php
http://www.altenergyaction.org/Monckton.html#sec7


9'16" Speech sponsored by Minnesota Free Market Institute St. Paul, October 2009

10'04" Monckton notes, FCPP website
http://www.fcpp.org/pdf/MoncktonwNotesOct809.pdf

11'58" Speech in Melbourne, February 2009

12'28" Interview on Australian TV program 'Sunrise' 2009

13'06" Monckton-Lambert debate: http://www.youtube.com/watch?v=nB5N8EtNCzA

13'53" Monckton testimony to US House Energy Independence & Global Warming Committee
6 May 2010

Lord Christopher Monckton Bunkum - Global cooling and melting ice

Christopher Monckton: Global cooling, not global warming



SOURCES:

16" Interview with Michael Coren

23" Interview on Australian TV program 'Sunrise' 2009

36" "Climate Chaos? Don't believe it."
Sunday Telegraph Nov 5, 2006

48" Monckton educational background:
Who's Who 2010

57" "Margaret Thatcher -- The Downing Street Years"
by Margaret Thatcher

1' ibid. p.640

1'05" ibid p.640

1'14" Speech to Sutherland Institute, Salt Lake City, March 2010

1'20" "Margaret Thatcher -- The Downing Street Years" p.640

1'52" "Apocalypse? No!" -- film by Christopher Monckton, 2007

2'09" "Climate Sensitivity Reconsidered," Forum on Physics and Society, July 2008

3'07" "Apocalypse? No!" -- film by Christopher Monckton, 2007

3'15" ibid.

4'05" Speech in Melbourne, February 2009

4'12" Speech sponsored by Minnesota Free Market Institute St. Paul, October 2009

4'24" "Waiting for Global Cooling" - R. Fawcett and D. Jones, National Climate Centre,
Australian Bureau of Meteorology, April 2008

4'50" "Statisticians reject global cooling"
-- Associated Press story 10/26/2009 reproduced at
http://www.msnbc.msn.com/id/33482750/ns/us_news-environment/

5'26" Speech in Melbourne, February 2009

6'16" Graphs taken from my video "Climate Change -- Is the Earth Cooling?"

6'54" St. Paul, October 2009

7'13" Graph taken from my video "Climate Change -- Is the Earth Cooling?"

3'24" Enso-corrected graph from http://fermiparadox.wordpress.com/

7'34" "Waiting for Global Cooling"

7'55" Speech in Melbourne, February 2009

8'38" Arctic Sea Ice New and Analysis, National Snow and Ice Data Center http://nsidc.org/arcticseaicenews/2011/010511.html
9'06" SPPI Monthly CO2 report, July 2009 Vol 1, Issue 7 p. 15
http://scienceandpublicpolicy.org/images/stories/papers/originals/co2_report_july_09.pdf

9'51 ibid.

10'35" Biospherics, using data from IARC-JAXA and NSIDC
http://joewheatley.net/arctic-sea-ice/

10'56" "Decreasing Arctic Sea Ice Mirrors Increasing CO2 on Decadal Time Scale"
Ola M Johannessen, Atmospheric and Oceanic Science Letters 2008 Vol. 1

11'59" "Recent Ice-Sheet Growth in the Interior of Greenland"
Ola M. Johannessen et al, Science November 2005

13'18" "Recent Greenland Ice Mass Loss by Drainage System from Satellite Gravity Observations" -- S. B. Luthcke, et al., Science November 2006

13'23" "Melting of Greenland Ice Sheet Satellite Gravity Measurements Confirm Accelerated Melting of Greenland Ice Sheet" --
J. L. Chen, et al., Science 2006

13'44" Speech at St. Paul, October 2009

--
Lord Christopher Monckton Bunkum Part 1 - Global cooling and melting ice